dvdata.h

Trolltech公司发布的图形界面操作系统。可在qt-embedded-2.3.10平台上编译为嵌入式图形界面操作系统。

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** All rights reserved.
**
** This file is part of the Qtopia Environment.
**
** This file may be distributed and/or modified under the terms of the
** GNU General Public License version 2 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file.
**
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** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
**
** See http://www.trolltech.com/gpl/ for GPL licensing information.
** See below for additional copyright and license information
**
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** not clear to you.
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**********************************************************************/
/*
 * Constants for DV codec
 * Copyright (c) 2002 Fabrice Bellard.
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

/**
 * @file dvdata.h
 * Constants for DV codec.
 */

/* 
 * DVprofile is used to express the differences between various 
 * DV flavors. For now it's primarily used for differentiating
 * 525/60 and 625/50, but the plans are to use it for various
 * DV specs as well (e.g. SMPTE314M vs. IEC 61834).
 */
typedef struct DVprofile {
    int              dsf;                 /* value of the dsf in the DV header */
    int              frame_size;          /* total size of one frame in bytes */
    int              difseg_size;         /* number of DIF segments */
    int              frame_rate;      
    int              frame_rate_base;
    int              ltc_divisor;         /* FPS from the LTS standpoint */
    int              height;              /* picture height in pixels */
    int              width;               /* picture width in pixels */
    AVRational       sar[2];              /* sample aspect ratios for 4:3 and 16:9 */
    const uint16_t  *video_place;         /* positions of all DV macro blocks */
    enum PixelFormat pix_fmt;             /* picture pixel format */
    
    int              audio_stride;        /* size of audio_shuffle table */
    int              audio_min_samples[3];/* min ammount of audio samples */
                                          /* for 48Khz, 44.1Khz and 32Khz */
    int              audio_samples_dist[5];/* how many samples are supposed to be */
                                         /* in each frame in a 5 frames window */
    const uint16_t (*audio_shuffle)[9];  /* PCM shuffling table */
} DVprofile;

#define NB_DV_VLC 409

static const uint16_t dv_vlc_bits[409] = {
 0x0000, 0x0002, 0x0007, 0x0008, 0x0009, 0x0014, 0x0015, 0x0016,
 0x0017, 0x0030, 0x0031, 0x0032, 0x0033, 0x0068, 0x0069, 0x006a,
 0x006b, 0x006c, 0x006d, 0x006e, 0x006f, 0x00e0, 0x00e1, 0x00e2,
 0x00e3, 0x00e4, 0x00e5, 0x00e6, 0x00e7, 0x00e8, 0x00e9, 0x00ea,
 0x00eb, 0x00ec, 0x00ed, 0x00ee, 0x00ef, 0x01e0, 0x01e1, 0x01e2,
 0x01e3, 0x01e4, 0x01e5, 0x01e6, 0x01e7, 0x01e8, 0x01e9, 0x01ea,
 0x01eb, 0x01ec, 0x01ed, 0x01ee, 0x01ef, 0x03e0, 0x03e1, 0x03e2,
 0x03e3, 0x03e4, 0x03e5, 0x03e6, 0x07ce, 0x07cf, 0x07d0, 0x07d1,
 0x07d2, 0x07d3, 0x07d4, 0x07d5, 0x0fac, 0x0fad, 0x0fae, 0x0faf,
 0x0fb0, 0x0fb1, 0x0fb2, 0x0fb3, 0x0fb4, 0x0fb5, 0x0fb6, 0x0fb7,
 0x0fb8, 0x0fb9, 0x0fba, 0x0fbb, 0x0fbc, 0x0fbd, 0x0fbe, 0x0fbf,
 0x1f80, 0x1f81, 0x1f82, 0x1f83, 0x1f84, 0x1f85, 0x1f86, 0x1f87,
 0x1f88, 0x1f89, 0x1f8a, 0x1f8b, 0x1f8c, 0x1f8d, 0x1f8e, 0x1f8f,
 0x1f90, 0x1f91, 0x1f92, 0x1f93, 0x1f94, 0x1f95, 0x1f96, 0x1f97,
 0x1f98, 0x1f99, 0x1f9a, 0x1f9b, 0x1f9c, 0x1f9d, 0x1f9e, 0x1f9f,
 0x1fa0, 0x1fa1, 0x1fa2, 0x1fa3, 0x1fa4, 0x1fa5, 0x1fa6, 0x1fa7,
 0x1fa8, 0x1fa9, 0x1faa, 0x1fab, 0x1fac, 0x1fad, 0x1fae, 0x1faf,
 0x1fb0, 0x1fb1, 0x1fb2, 0x1fb3, 0x1fb4, 0x1fb5, 0x1fb6, 0x1fb7,
 0x1fb8, 0x1fb9, 0x1fba, 0x1fbb, 0x1fbc, 0x1fbd, 0x1fbe, 0x1fbf,
 0x7f00, 0x7f01, 0x7f02, 0x7f03, 0x7f04, 0x7f05, 0x7f06, 0x7f07,
 0x7f08, 0x7f09, 0x7f0a, 0x7f0b, 0x7f0c, 0x7f0d, 0x7f0e, 0x7f0f,
 0x7f10, 0x7f11, 0x7f12, 0x7f13, 0x7f14, 0x7f15, 0x7f16, 0x7f17,
 0x7f18, 0x7f19, 0x7f1a, 0x7f1b, 0x7f1c, 0x7f1d, 0x7f1e, 0x7f1f,
 0x7f20, 0x7f21, 0x7f22, 0x7f23, 0x7f24, 0x7f25, 0x7f26, 0x7f27,
 0x7f28, 0x7f29, 0x7f2a, 0x7f2b, 0x7f2c, 0x7f2d, 0x7f2e, 0x7f2f,
 0x7f30, 0x7f31, 0x7f32, 0x7f33, 0x7f34, 0x7f35, 0x7f36, 0x7f37,
 0x7f38, 0x7f39, 0x7f3a, 0x7f3b, 0x7f3c, 0x7f3d, 0x7f3e, 0x7f3f,
 0x7f40, 0x7f41, 0x7f42, 0x7f43, 0x7f44, 0x7f45, 0x7f46, 0x7f47,
 0x7f48, 0x7f49, 0x7f4a, 0x7f4b, 0x7f4c, 0x7f4d, 0x7f4e, 0x7f4f,
 0x7f50, 0x7f51, 0x7f52, 0x7f53, 0x7f54, 0x7f55, 0x7f56, 0x7f57,
 0x7f58, 0x7f59, 0x7f5a, 0x7f5b, 0x7f5c, 0x7f5d, 0x7f5e, 0x7f5f,
 0x7f60, 0x7f61, 0x7f62, 0x7f63, 0x7f64, 0x7f65, 0x7f66, 0x7f67,
 0x7f68, 0x7f69, 0x7f6a, 0x7f6b, 0x7f6c, 0x7f6d, 0x7f6e, 0x7f6f,
 0x7f70, 0x7f71, 0x7f72, 0x7f73, 0x7f74, 0x7f75, 0x7f76, 0x7f77,
 0x7f78, 0x7f79, 0x7f7a, 0x7f7b, 0x7f7c, 0x7f7d, 0x7f7e, 0x7f7f,
 0x7f80, 0x7f81, 0x7f82, 0x7f83, 0x7f84, 0x7f85, 0x7f86, 0x7f87,
 0x7f88, 0x7f89, 0x7f8a, 0x7f8b, 0x7f8c, 0x7f8d, 0x7f8e, 0x7f8f,
 0x7f90, 0x7f91, 0x7f92, 0x7f93, 0x7f94, 0x7f95, 0x7f96, 0x7f97,
 0x7f98, 0x7f99, 0x7f9a, 0x7f9b, 0x7f9c, 0x7f9d, 0x7f9e, 0x7f9f,
 0x7fa0, 0x7fa1, 0x7fa2, 0x7fa3, 0x7fa4, 0x7fa5, 0x7fa6, 0x7fa7,
 0x7fa8, 0x7fa9, 0x7faa, 0x7fab, 0x7fac, 0x7fad, 0x7fae, 0x7faf,
 0x7fb0, 0x7fb1, 0x7fb2, 0x7fb3, 0x7fb4, 0x7fb5, 0x7fb6, 0x7fb7,
 0x7fb8, 0x7fb9, 0x7fba, 0x7fbb, 0x7fbc, 0x7fbd, 0x7fbe, 0x7fbf,
 0x7fc0, 0x7fc1, 0x7fc2, 0x7fc3, 0x7fc4, 0x7fc5, 0x7fc6, 0x7fc7,
 0x7fc8, 0x7fc9, 0x7fca, 0x7fcb, 0x7fcc, 0x7fcd, 0x7fce, 0x7fcf,
 0x7fd0, 0x7fd1, 0x7fd2, 0x7fd3, 0x7fd4, 0x7fd5, 0x7fd6, 0x7fd7,
 0x7fd8, 0x7fd9, 0x7fda, 0x7fdb, 0x7fdc, 0x7fdd, 0x7fde, 0x7fdf,
 0x7fe0, 0x7fe1, 0x7fe2, 0x7fe3, 0x7fe4, 0x7fe5, 0x7fe6, 0x7fe7,
 0x7fe8, 0x7fe9, 0x7fea, 0x7feb, 0x7fec, 0x7fed, 0x7fee, 0x7fef,
 0x7ff0, 0x7ff1, 0x7ff2, 0x7ff3, 0x7ff4, 0x7ff5, 0x7ff6, 0x7ff7,
 0x7ff8, 0x7ff9, 0x7ffa, 0x7ffb, 0x7ffc, 0x7ffd, 0x7ffe, 0x7fff,
 0x0006,
};

static const uint8_t dv_vlc_len[409] = {
  2,  3,  4,  4,  4,  5,  5,  5,
  5,  6,  6,  6,  6,  7,  7,  7,
  7,  7,  7,  7,  7,  8,  8,  8,
  8,  8,  8,  8,  8,  8,  8,  8,
  8,  8,  8,  8,  8,  9,  9,  9,
  9,  9,  9,  9,  9,  9,  9,  9,
  9,  9,  9,  9,  9, 10, 10, 10,
 10, 10, 10, 10, 11, 11, 11, 11,
 11, 11, 11, 11, 12, 12, 12, 12,
 12, 12, 12, 12, 12, 12, 12, 12,
 12, 12, 12, 12, 12, 12, 12, 12,
 13, 13, 13, 13, 13, 13, 13, 13,
 13, 13, 13, 13, 13, 13, 13, 13,
 13, 13, 13, 13, 13, 13, 13, 13,
 13, 13, 13, 13, 13, 13, 13, 13,
 13, 13, 13, 13, 13, 13, 13, 13,
 13, 13, 13, 13, 13, 13, 13, 13,
 13, 13, 13, 13, 13, 13, 13, 13,
 13, 13, 13, 13, 13, 13, 13, 13,
 15, 15, 15, 15, 15, 15, 15, 15,
 15, 15, 15, 15, 15, 15, 15, 15,
 15, 15, 15, 15, 15, 15, 15, 15,
 15, 15, 15, 15, 15, 15, 15, 15,
 15, 15, 15, 15, 15, 15, 15, 15,
 15, 15, 15, 15, 15, 15, 15, 15,
 15, 15, 15, 15, 15, 15, 15, 15,
 15, 15, 15, 15, 15, 15, 15, 15,
 15, 15, 15, 15, 15, 15, 15, 15,
 15, 15, 15, 15, 15, 15, 15, 15,
 15, 15, 15, 15, 15, 15, 15, 15,
 15, 15, 15, 15, 15, 15, 15, 15,
 15, 15, 15, 15, 15, 15, 15, 15,
 15, 15, 15, 15, 15, 15, 15, 15,
 15, 15, 15, 15, 15, 15, 15, 15,
 15, 15, 15, 15, 15, 15, 15, 15,
 15, 15, 15, 15, 15, 15, 15, 15,
 15, 15, 15, 15, 15, 15, 15, 15,
 15, 15, 15, 15, 15, 15, 15, 15,
 15, 15, 15, 15, 15, 15, 15, 15,
 15, 15, 15, 15, 15, 15, 15, 15,
 15, 15, 15, 15, 15, 15, 15, 15,
 15, 15, 15, 15, 15, 15, 15, 15,
 15, 15, 15, 15, 15, 15, 15, 15,
 15, 15, 15, 15, 15, 15, 15, 15,
 15, 15, 15, 15, 15, 15, 15, 15,
 15, 15, 15, 15, 15, 15, 15, 15,
 15, 15, 15, 15, 15, 15, 15, 15,
 15, 15, 15, 15, 15, 15, 15, 15,
 15, 15, 15, 15, 15, 15, 15, 15,
 15, 15, 15, 15, 15, 15, 15, 15,
 15, 15, 15, 15, 15, 15, 15, 15,
  4,
};

static const uint8_t dv_vlc_run[409] = {
  0,  0,  1,  0,  0,  2,  1,  0,
  0,  3,  4,  0,  0,  5,  6,  2,
  1,  1,  0,  0,  0,  7,  8,  9,
 10,  3,  4,  2,  1,  1,  1,  0,
  0,  0,  0,  0,  0, 11, 12, 13,
 14,  5,  6,  3,  4,  2,  2,  1,
  0,  0,  0,  0,  0,  5,  3,  3,
  2,  1,  1,  1,  0,  1,  6,  4,
  3,  1,  1,  1,  2,  3,  4,  5,
  7,  8,  9, 10,  7,  8,  4,  3,
  2,  2,  2,  2,  2,  1,  1,  1,
  0,  1,  2,  3,  4,  5,  6,  7,
  8,  9, 10, 11, 12, 13, 14, 15,
 16, 17, 18, 19, 20, 21, 22, 23,
 24, 25, 26, 27, 28, 29, 30, 31,
 32, 33, 34, 35, 36, 37, 38, 39,
 40, 41, 42, 43, 44, 45, 46, 47,
 48, 49, 50, 51, 52, 53, 54, 55,
 56, 57, 58, 59, 60, 61, 62, 63,
  0,  0,  0,  0,  0,  0,  0,  0,
  0,  0,  0,  0,  0,  0,  0,  0,
  0,  0,  0,  0,  0,  0,  0,  0,
  0,  0,  0,  0,  0,  0,  0,  0,
  0,  0,  0,  0,  0,  0,  0,  0,
  0,  0,  0,  0,  0,  0,  0,  0,
  0,  0,  0,  0,  0,  0,  0,  0,
  0,  0,  0,  0,  0,  0,  0,  0,
  0,  0,  0,  0,  0,  0,  0,  0,
  0,  0,  0,  0,  0,  0,  0,  0,
  0,  0,  0,  0,  0,  0,  0,  0,
  0,  0,  0,  0,  0,  0,  0,  0,
  0,  0,  0,  0,  0,  0,  0,  0,
  0,  0,  0,  0,  0,  0,  0,  0,
  0,  0,  0,  0,  0,  0,  0,  0,
  0,  0,  0,  0,  0,  0,  0,  0,
  0,  0,  0,  0,  0,  0,  0,  0,
  0,  0,  0,  0,  0,  0,  0,  0,
  0,  0,  0,  0,  0,  0,  0,  0,
  0,  0,  0,  0,  0,  0,  0,  0,
  0,  0,  0,  0,  0,  0,  0,  0,
  0,  0,  0,  0,  0,  0,  0,  0,
  0,  0,  0,  0,  0,  0,  0,  0,
  0,  0,  0,  0,  0,  0,  0,  0,
  0,  0,  0,  0,  0,  0,  0,  0,
  0,  0,  0,  0,  0,  0,  0,  0,
  0,  0,  0,  0,  0,  0,  0,  0,
  0,  0,  0,  0,  0,  0,  0,  0,
  0,  0,  0,  0,  0,  0,  0,  0,
  0,  0,  0,  0,  0,  0,  0,  0,
  0,  0,  0,  0,  0,  0,  0,  0,
  0,  0,  0,  0,  0,  0,  0,  0,
  0,
};

static const uint8_t dv_vlc_level[409] = {
  1,  2,  1,  3,  4,  1,  2,  5,
  6,  1,  1,  7,  8,  1,  1,  2,
  3,  4,  9, 10, 11,  1,  1,  1,
  1,  2,  2,  3,  5,  6,  7, 12,
 13, 14, 15, 16, 17,  1,  1,  1,
  1,  2,  2,  3,  3,  4,  5,  8,
 18, 19, 20, 21, 22,  3,  4,  5,
  6,  9, 10, 11,  0,  0,  3,  4,
  6, 12, 13, 14,  0,  0,  0,  0,
  2,  2,  2,  2,  3,  3,  5,  7,
  7,  8,  9, 10, 11, 15, 16, 17,
  0,  0,  0,  0,  0,  0,  0,  0,
  0,  0,  0,  0,  0,  0,  0,  0,
  0,  0,  0,  0,  0,  0,  0,  0,
  0,  0,  0,  0,  0,  0,  0,  0,
  0,  0,  0,  0,  0,  0,  0,  0,
  0,  0,  0,  0,  0,  0,  0,  0,
  0,  0,  0,  0,  0,  0,  0,  0,
  0,  0,  0,  0,  0,  0,  0,  0,
  0,  1,  2,  3,  4,  5,  6,  7,
  8,  9, 10, 11, 12, 13, 14, 15,
 16, 17, 18, 19, 20, 21, 22, 23,
 24, 25, 26, 27, 28, 29, 30, 31,
 32, 33, 34, 35, 36, 37, 38, 39,
 40, 41, 42, 43, 44, 45, 46, 47,
 48, 49, 50, 51, 52, 53, 54, 55,
 56, 57, 58, 59, 60, 61, 62, 63,
 64, 65, 66, 67, 68, 69, 70, 71,
 72, 73, 74, 75, 76, 77, 78, 79,
 80, 81, 82, 83, 84, 85, 86, 87,
 88, 89, 90, 91, 92, 93, 94, 95,
 96, 97, 98, 99, 100, 101, 102, 103,
 104, 105, 106, 107, 108, 109, 110, 111,
 112, 113, 114, 115, 116, 117, 118, 119,
 120, 121, 122, 123, 124, 125, 126, 127,
 128, 129, 130, 131, 132, 133, 134, 135,
 136, 137, 138, 139, 140, 141, 142, 143,
 144, 145, 146, 147, 148, 149, 150, 151,
 152, 153, 154, 155, 156, 157, 158, 159,
 160, 161, 162, 163, 164, 165, 166, 167,
 168, 169, 170, 171, 172, 173, 174, 175,
 176, 177, 178, 179, 180, 181, 182, 183,
 184, 185, 186, 187, 188, 189, 190, 191,
 192, 193, 194, 195, 196, 197, 198, 199,
 200, 201, 202, 203, 204, 205, 206, 207,
 208, 209, 210, 211, 212, 213, 214, 215,
 216, 217, 218, 219, 220, 221, 222, 223,
 224, 225, 226, 227, 228, 229, 230, 231,
 232, 233, 234, 235, 236, 237, 238, 239,
 240, 241, 242, 243, 244, 245, 246, 247,
 248, 249, 250, 251, 252, 253, 254, 255,
  0,
};

/* unquant tables (not used directly) */
static const uint8_t dv_88_areas[64] = {
    0,0,0,1,1,1,2,2,
    0,0,1,1,1,2,2,2,
    0,1,1,1,2,2,2,3,
    1,1,1,2,2,2,3,3,
    1,1,2,2,2,3,3,3,
    1,2,2,2,3,3,3,3,
    2,2,2,3,3,3,3,3,
    2,2,3,3,3,3,3,3,
};

static const uint8_t dv_248_areas[64] = {
    0,0,1,1,1,2,2,3,
    0,0,1,1,2,2,2,3,
    0,1,1,2,2,2,3,3,
    0,1,1,2,2,2,3,3,
    1,1,2,2,2,3,3,3,
    1,1,2,2,2,3,3,3,
    1,2,2,2,3,3,3,3,
    1,2,2,3,3,3,3,3,
};

static const uint8_t dv_quant_shifts[22][4] = {
  { 3,3,4,4 }, 
  { 3,3,4,4 }, 
  { 2,3,3,4 }, 
  { 2,3,3,4 },
  { 2,2,3,3 }, 
  { 2,2,3,3 }, 
  { 1,2,2,3 }, 
  { 1,2,2,3 }, 
  { 1,1,2,2 }, 
  { 1,1,2,2 }, 
  { 0,1,1,2 }, 
  { 0,1,1,2 }, 
  { 0,0,1,1 }, 
  { 0,0,1,1 },
  { 0,0,0,1 }, 
  { 0,0,0,0 }, 
  { 0,0,0,0 }, 
  { 0,0,0,0 }, 
  { 0,0,0,0 }, 
  { 0,0,0,0 }, 
  { 0,0,0,0 }, 
  { 0,0,0,0 },
};

static const uint8_t dv_quant_offset[4] = { 6, 3, 0, 1 };

/* NOTE: I prefer hardcoding the positionning of dv blocks, it is
   simpler :-) */